Adjustable guide for drop-presses and the like.



- A. 0. SLBNTZ. ADJUSTABLE GUIDE POR DROP PRESSES AND THE LIKE.

- APPLIUATION FILED PEB. 20, 1914. 1,101,344. Patented June 23,1914,

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A. 0. SLENTZ. ADJUSTABLE GUIDE POR DROP PRESSES AND THE LIKE. l

APPLICATION FILED FEB. 20, 1914. Patented June 23 2 SHEETS-SHEET 2.

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ALBERTUS O. SLENTZ, OF CANTON, OI-IIO, ASSIGNOR TO THE CANTON '.EOUNDRY AND MACHINE COMPANY, OF CANTON, OHIO, A CORPORATION OF OHIO.

ADJUSTABLE GUIDE FOR DROP-PRESSES AND THE LIKE.

` Specification of Letters Patent.

Application filed February'fZO, 1914.

To all 'whom 'it may concern:

Be it known that I, ALBERTUS O. SLENTZ, a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, have invented a new and useful Adjustable Guide for Drop-Presses and the like, of which the following is a specification.

My invention relates to improvements in drop presses and the like and especially to an adjustable guide for holding the head orhammer in true position as it is raised and lowered with reference to the anvil or block. It will be understood that drop presses are frequently used for stamping sheet metal and the like or in doing other work where an upper and lower die are employed, which dies must come together with great accuracy in order to do proper work. f The variation of an extremely small fraction of an inch is very objectionable and injurious to the dies, and some means for guiding the hammer or head with absolute accuracy is therefore of great importance. Constant use of the drop press, the hammer being raised and lowered numberless times, causes the= guides for the hammer to become worn, Vand it is then necessary to accomplish delicate adjustment of said guides in order to maintain the accuracy of the hammers movement.

The objects of my invention are, to generally improve devices of the character mentioned and to provide an adjustable guide for drop presses and the like which will be `capable of easy, quick, and delicate adjustment without the necessity of taking the drop press apart, and to provide for such adjustment by a construction which is simple, inexpensive, thoroughly practical and not subject to unusual wear. These objects, together with other objects apparent to those skilled in the art, may be attained by the construction illustrated in the accompanying drawings, although the invention may be embodied in other forms, the construction illustrated being chosen by way of example.

In the drawings Figure 1 is a front elevation of a drop press provided with adjustable guides in accordance with my invention. Fig. 2 is a vertical sectional view of lone of the uprights and the adjustable guide connected thereto. Fig. 3 is an elevation of the stationary adjusting base. Fig. 4 is an elevation of the inner side of the adjustable guide proper. Fig. 5 is an elevation of the outer side of the same. Fig. 6 is a horizontal sectional view on the line 6 6 of Fig. 2.

Throughout the several views similar reference numerals indicate similar parts.

More specifically describing t-he construction disclosed in said drawings, the numeral 1 indicates the anvil and the numeral 2 the hammer of the drop press. Above the hammer and anvil is suitable mechanism, including a winding spool 3 and the lifting band 4 whereby to lift the hammer 2 to permit it to drop upon the anvil 1.

The numerals 5--5 generally indicate the spaced uprights connected to the two sides of the anvil 1 and extending upwardly in parallel relation with each other to form a frame or support for the hammer guides proper. Each of said uprights comprises a wooden filler 6 preferably of laminated structure and bound by the channel pieces 7 and 8 constituting outer and inner filler plates respectively. To the inner iller plate 8 is connected the stationary adjusting base 9 which comprises a broad plate portion 10 and integral flange portions 11 adapted to include between them the said inner channel piece 8. The base 9 is connected to the channel piece 8 by the bolts 12 or their equivalent extending through the filler 6 and the channel piece 7 as shown in the drawings.

vExtending from the inner face of the plate portion 10 are a plurality of vertically spaced pairs of projections, each projection comprising an alining portion 13 provided with an inner face spaced from and parallel with the face of the plate portion 10. From said surface of said alining portion an inclined face 14 extends downwardly and backwardly and merges in the surface of the plate portion 10. The inner, opposite edges 15 of .each pair of projections are parallel and the pairs-of projections are arranged in true vertical alinement. Through each inclined face 14 extends an aperture 16 for the reception of a bolt 17, the head of which is countersunk in the rear surface of the base 9 as clearly shown in Fig. 2. In the vertical median line of the plate portion 10 above the uppermost pair of projections and below the lowermost pair of projections are the upper and lower brackets 18 and 19 respectively which project inwardly from the plate portion 10 and are provided with adjusting screws 20 for the purpose hereinafter more fully disclosed.

Each adjustable guide proper comprises a plate 21 of a length adapted to be received between thebrackets 18 and 19 and provided upon its rear face with a vertical series of vertically spaced alining projections 02 each having a face 23 spaced from and parallel with the rear face of the plate 21 and having parallel side edges 24 adapted to be received between the opposite edges 15 of the alining projections of the stationary adjust-- ing base. rIhe rear face of the plate 21 1s also provided with adjusting projections 25 having faces 2G oppositely inclined with relation to the faces 11 so that the adjusting projections of the base 9 and the plate 21 may be complementary. .Extending through each adjusting projection 25 of the plate 21 is a vertically disposed slot 27 adapted to Vreceive one of the bolts 17, nuts 28 on the inner ends of said bolts being adapted to bear against the plain face 29 of the plate 21 for the purpose of clamping the adjustable guide to the stationary adjusting base.

Projecting from the plate 21 is the integral, vertically disposed guiding rib 30 adapted to slidingly engage the hammer 2 in the manner well known to those skilled in the art. The surfaces on the hammer and on said rib which are in sliding engagement are the surfaces which become worn by use, for which wear the adjustment made possible by the present invention is necessary.

In attaching the adjustable guide to the base 9 the inclined faces 26 0f said guide should be arranged to engage the inclined faces 14 on said base, the alining projections 22 being received between the alining portions 13 of the base 9. By this arrangement the edges 211 and edges 15 areV placed in sliding contact with each other to insure true vertical movement of the adjustable guide with reference to the plate portion 10. It will be evident from an inspection of Fig. 2 that if the plate 21 is moved upwardly with reference to the plate portion 10 the inclined faces 14 and 26 will coperate to move the plate 21 inwardly away from the plate portion 10. The bolts 17 with their nut-s 28 permitting vertical movement'of the plate 21 by reason of the slots 27, the adjusting screws 20 may be employed to move said plate 21 upwardly or downwardly as may be desired. Rotation of said screws 2O to produce endwise vertical movement of the plate 21 will produce slight lateral movement of said plate, thus producing a very certain and delicate adjustment readily accomplished with few tools by an unskilled person;

It will be understood that both of the uprights 5 are provided with guide adjusting construction, such as just described, and by proper manipulation of the nuts 28 and the screws 20 the guiding ribs 30 may be so moved that the hammer 2 may be guided with absolute accuracy and any wear upon said ribs or said hammer may be readily taken up so as toproduce perfect adjustment of said ribs to said hammer at all times.

` I claim 1. An adjustable guide for drop presses and the like comprising a stationary base and a movable guide, said base provided with a plurality of vertically spaced pairs of projections, the two projections of each pair being horizontally spaced from each other and each projection comprising an alining portion and an inclined face portion, said movable guide provided with a vertical series of vertically spaced projections, certain portions of said projections adapted to engage-the alining portions 0f the projections on saidstationary base and other portions kof said projections provided with inclined faces complementary .to the inclined face portions lof the projections upon said base, means for ylongitudinally adjusting said guide with Vrelation to said stationary base and means for holding said guide in fixed adjustment.

2. An adjustable guide Vfor drop presses and the like comprising a stationary base, a vertical series of vertically spaced, horizontally disposed pairs of projections, each pair of projections having inner, opposite, parallel edges and inclined faces, an adjustable guide proper provided with a vertical series of alining projections, each of said projections 'j adapted to lit between a pair of projections lon said stationary base, inclined faces arranged adjacent each of said alining projections and adapted to engage the inclined faces of the corresponding pair of projections on said stationary base, adjusting screws connected to said stationary base, engaging the adjustable guide proper and adapted to move'the same with relation to said stationary base, and bolts secured to said stationary base and extending through slots in said adjustable guide and adapted to holdisaid adjustable guide in fixed adjustment with relation to said stationary base. i Y l 3.111 combination, a stationary base provided with a pair of horizontallyv spaced projections provided with oppositely disposed, parallel, vertical inner edges and inclined faces, and a guide'pro'per provided with a projection having side edges adapted to slidingly engage said inner edges of said first mentioned'projections and `with inclined faces complementing the inclined faces of said first mentioned projections, means connected to said basefor vertically adjusting Said guide Pieper, and means. 'c011- nected to said base for clamping said guide to said base in Xed adjustment.

4. For a device of the character described a base plate provided with a vertical series of vertically spaced horizontally disposed pairs of projections provided with inner parallel, horizontally spaced, opposite edges and with inclined faces, brackets at the upper and lower ends respectively of said base plate, and adjusting screws connected to said brackets substantially in the median line between the individual projections constituting the vertically spaced pairs.

5. For a device of the character described 15 a guide proper comprising a plate, a vertical series of vertically spaced alining projections on one side of said plate, inclined faced portions at the sides of said projections, and an integral guiding rib on the other side of said plate, said plate provided with vertically disposed slots extending through said inclined faces.

In testimony that I claim the above, I have hereunto subscribed my name in the presence of two witnesses.

ALBERTUS O. SLENTZ.

Witnesses:

WARREN E. SLENTZ, JAMES A. JEFFERS.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. G. 

